export declare class PerformanceMark {
    protected name: string;
    protected running: boolean;
    protected startValue: number;
    protected endValue: number;
    protected duration: number;
    protected count: number;
    constructor(name: string);
    getName(): string;
    isRunning(): boolean;
    start(): PerformanceMark;
    stop(): number;
    getDuration(): number;
    reset(): PerformanceMark;
    getCount(): number;
}